20700120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1297}}^1$

素因数の和:1337

約数の個数: 128

約数和(自身を含む): 74764800

約数和(自身を除く): 54064680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 56, 57, 60, 70, 76, 84, 95, 105, 114, 120, 133, 140, 152, 168, 190, 210, 228, 266, 280, 285, 380, 399, 420, 456, 532, 570, 665, 760, 798, 840, 1064, 1140, 1297, 1330, 1596, 1995, 2280, 2594, 2660, 3192, 3891, 3990, 5188, 5320, 6485, 7782, 7980, 9079, 10376, 12970, 15564, 15960, 18158, 19455, 24643, 25940, 27237, 31128, 36316, 38910, 45395, 49286, 51880, 54474, 72632, 73929, 77820, 90790, 98572, 108948, 123215, 136185, 147858, 155640, 172501, 181580, 197144, 217896, 246430, 272370, 295716, 345002, 363160, 369645, 492860, 517503, 544740, 591432, 690004, 739290, 862505, 985720, 1035006, 1089480, 1380008, 1478580, 1725010, 2070012, 2587515, 2957160, 3450020, 4140024, 5175030, 6900040, 10350060, 20700120]

約数ペア:

[(1, 20700120), (2, 10350060), (3, 6900040), (4, 5175030), (5, 4140024), (6, 3450020), (7, 2957160), (8, 2587515), (10, 2070012), (12, 1725010), (14, 1478580), (15, 1380008), (19, 1089480), (20, 1035006), (21, 985720), (24, 862505), (28, 739290), (30, 690004), (35, 591432), (38, 544740), (40, 517503), (42, 492860), (56, 369645), (57, 363160), (60, 345002), (70, 295716), (76, 272370), (84, 246430), (95, 217896), (105, 197144), (114, 181580), (120, 172501), (133, 155640), (140, 147858), (152, 136185), (168, 123215), (190, 108948), (210, 98572), (228, 90790), (266, 77820), (280, 73929), (285, 72632), (380, 54474), (399, 51880), (420, 49286), (456, 45395), (532, 38910), (570, 36316), (665, 31128), (760, 27237), (798, 25940), (840, 24643), (1064, 19455), (1140, 18158), (1297, 15960), (1330, 15564), (1596, 12970), (1995, 10376), (2280, 9079), (2594, 7980), (2660, 7782), (3192, 6485), (3891, 5320), (3990, 5188)]